In Rajasthan, pteridophytic flora is the scantier floristic resources but some sites like Mt. Abu, Kumbhalgarh, Sitamata, Todgarh-Raoli Sanctuary and Bundi are richer in distribution of pteridophytes. According to king's "Sketch of flora of Rajputana" (1878-79) about 63 species of 29 genera of pteridophytes were reported. But later on intensive survey carried out by many explorers and revealed the occurrence of only 44 species belonging to 23 genera. Athyrium hohenockerianum, A. parasnathense, Asplenium lanulatum, Botrychium lanuginosum, Cheilanthes belangeri, Dryopteris parasitica, Pityrogramma calomelanos and Pteris cretica have not been reported despite thorough search by the researchers. It is a clear indication that these taxa have lost/eradicated from Rajasthan. This is an alarm for us to give proper attention to pteridophytic vegetation especially to such restricted taxa as Asplenium pumilum var. hymenophylloides, Isoetes reticulata, I. rajasthanensis and Marsilea aegyptiaca and Selaginella rajasthanensis. Similarly, populations of some ferns like Araiostegia pseudocystopteris, Dryopteris cochleata, Nephrolepis cordifolia, Ophioglossum gramineum and Pteris vittata, are also becoming thin and restricted in Mt. Abu. Severity of the threat to pteridophytic flora of Rajasthan is demanded to conserve this beauty of nature. Negripteris scioana (Chiov.) Pic.Serm. is a new record to the pteridophytic flora of Rajasthan.
Rajasthan, pteridophytic flora, survey, explorers, taxa, restricted, record
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